Grinding wheel blower



June 10, 1952 w, ER 2,599,952

GRINDING WHEEL BLOWER Filed June 4, 1951 INVENTOR.

Wilfred ,fi zrayeryz/mwq ATTD R N EYB Patented June 10, 1952 UNITEDSTATES PATENT OFFICE 2,599,952" GRINlJIN'G WHE E Ii newts". WilfredStray'er, ceimantown; Ohio Application June 4, 1951, Serial No. 229,734

1 Claim.

This invention relates to grinding wheels particularly of the portabletype where a grinding wheel is mounted on a head adapted to be held byhand, and in particular a blower or fan formed with fan bladesincorporated in the head of a cap screw or bushing for securing agrinding wheel on the end of a spindle wherein as the grinding wheelrotates the blades blow air across the grinding wheel, blowing away dustresulting from grinding and cooling the wheel. The purpose of thisinvention is to provide means for continuously cooling a grinding wheelby providing a fan on the wheel that operates continuously with theoperation of the grinding wheel.

Various methods have been used for flowing liquids over grinding wheelsto facilitate coolin and other types of blowers have been employed forblowing grinding dust away from the grinding operation and also forcoolin the grinding wheel, however, such devices have been provided asauxiliary attachments and attachments of this type interfere withfreedom of grinding around the wheel. With this thought in mind thisinvention contemplates a device wherein a blower is incorporated in themounting elements of the grinding wheel wherein a continuous draft ofair is circulated over the entire surface of one side of the wheel.

Using the type of attachments where air and other fluids are directedagainst the grinding wheel the air or liquid is applied at one pointonly whereas with the device of this invention the draft of air isspread continuously over the entire area of the grinding wheel.

The object of this invention is, therefore, to provide means forincorporating air circulating means in a grinding wheel mounting wherebya continuous stream of air is circulated over the surface of thegrinding wheel.

. Another object of the invention is to provide a blower in combinationwith a grinding wheel whereby the blower rotates with the wheel, inwhich the blower may be incorporated in wheels now in use withoutchanging the design or con struction thereof.

A further object of the invention is to provide a grinding wheel blowerthat is incorporated in the mounting of the wheel in which the blower isof a simple and economical construction.

With these and other objects and advantages in view the inventionembodies a bushing threaded on the stud at the end of a spindle of agrinding wheel mounting in which fan blades are positioned betweenparallel plates formin a head on the end of the bushing.

Other features and advantages of the invention will appear from thefollowing description taken in connection with the drawings wherein:

Figure 1 is a side elevational view illustrating the improved grindingwheel mounting and showing the position of the blower in relation to thegrinding wheel.

Figure 2 is a view looking upwardly toward the under surface of theblower and wheel with parts of the wheel broken away.

Figure 3 is a similar view with the lower plate of the blower brokenaway and with the fan blades shown in section.

Figure 4 is a cross section through the grinding wheel mounting taken online 4-4 of Figure 2 and showing the parts on an enlarged scale.

Referring now to the drawings wherein like reference characters denotecorresponding parts the improved grinding wheel blower of this inventionincludes an internally threaded bushing l0 having a head formed with aninner plate II and an outer plate I2 and a plurality of vanes or fanblades 13 positioned between the inner and outer plates.

As illustrated in Figure 4 the lower plate I2 is provided with acentrally disposed opening I4 and as the grinding wheel rotates air isdrawn inwardly through the opening Id and discharged from the ends ofthe blades and through the peripheral wall of the head formed by theblades and plates II and [2.

With the parts arranged in this manner the grinding wheel, as indicatedby the numeral I5 is clamped on a threaded stud IE on the end of aspindle I? by the bushing whereby the blower mounting provides means forsecuring the grinding wheel on the spindle.

It will be appreciated that although this is a typical mounting forgrinding wheels the blower may also be incorporated in different formsof mountings and particularly where a grinding wheel is secured on theend of a spindle with a cap screw wherein the plates H and I2 and bladesl3 may form the head of the cap screw.

With the parts arranged as shown in the drawing rotation of the grindingwheel causes air to be drawn inwardly through the opening M andcirculated over the lower surface of the wheel whereby dust, grit andthe like are blown from the grinding area and at the same time thecontinuous stream of air spread over the entire surface of the wheelkeeps the wheel at a comparatively low temperature and with the wheeloperating at a low temperature the granular particles do not work looseso that the life of the wheel is extended.

It will be understood that other modifications may be made in the designand arrangement of the parts without departing from the spirit of theinvention.

What is claimed is:

In a grinding wheel, the combination which comprises a spindle having athreaded stud on 10 the end thereof, a bushing threaded on the said studand having spaced parallel plates with fan blades between the plates andwith an opening through the center of the outer plate positioned in aplane perpendicular to the axis of the bush- 15 ing forming a head forthe bushing, and a grinding wheel positioned on the bushing and clampedbetween the said head and end of the spindle.

' WILFRED STRAYER.

REFERENCES CITED The following references are of record in the file ofthis patent:

UNITED STATES PATENTS Number Name Date 137,465 Messer Apr. 1, 1873803,087 Arnold Oct. 31, 1905 1,778,015 Becker Oct. 14, 1930 2,182,952Todd et a1. Dec. 12. 1939

